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SUB-OS/gui/gui_icons.c
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subhobhai943andClaude Opus 5 1aee7c7a0d feat(gui): Add SUB-WT widget toolkit, icon set, modal dialogs, six apps and a reworked window manager 
Turns the desktop from a fixed set of hand-drawn panels into a real
environment applications can be written against.

SUB-WT immediate-mode toolkit (gui/gui_widgets.c):
  Buttons, labels, checkboxes, radios, sliders, list boxes, text fields, tab
  bars, scrollbars, progress bars, sparklines and badges. An app feeds the WM
  event into the toolkit and then calls widgets from its paint routine, so
  each call both draws the control and reports what the user did with it --
  no retained widget tree to keep in sync with window state.

Icons and dialogs:
  gui_icons.c holds 14 16x16 palette-indexed glyphs stored as hex text, so the
  art stays hand-editable and picks up theme changes for free; they scale by
  integer factors and can be drawn as tint stencils. gui_dialog.c adds modal
  info/warning/error/confirm dialogs that dim the desktop, take exclusive
  input, word-wrap on spaces and report results through a callback.

Applications (gui/gui_apps_ext.c):
  Settings (tabbed appearance/input/power), Task Manager (live process table
  over task_find_by_pid with memory and heap gauges), Kernel Log viewer (reads
  the dmesg ring, strips ANSI, colours by severity, scrolls), KTest Runner
  (drives the in-kernel suites and reports 21/21 with timing), Clock & Calendar
  (Zeller's congruence month grid) and a Text Editor.

Window manager (gui/gui_wm.c):
  Minimize/maximize/restore buttons, a corner resize grip, edge snapping, tile
  and cascade layouts, F5-F9 shortcuts, title truncation, and index-based
  enumeration so the taskbar no longer assumes window ids stay dense.

Desktop shell (gui/gui_desktop.c):
  Launcher icon grid, richer start menu, right-click context menu, taskbar
  buttons that minimize and restore, and a live CPU trace in the tray.

Two interaction bugs fixed along the way:
  - keyboard_get_key() blocks until a key arrives, so calling it every frame
    froze the compositor; it is now gated on keyboard_has_key(), and stale
    console input is drained before the first frame.
  - When the desktop consumed a click, the WM's press-edge detector kept the
    pre-press state and read the still-held button as a fresh press on the
    next frame, stealing focus from whatever the click had just opened.
    gui_wm_sync_button_state() keeps the two layers in step.

Co-Authored-By: Claude Opus 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01L5yKJT4Wo2cV3rfPrwY5MP
2026-08-25 00:18:55 +05:30

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// SUB-OS Desktop Icon Set: 16x16 palette-indexed glyphs
//
// Each icon is 16 rows of 16 hex digits, where the digit indexes the shared
// palette below. Storing the art as text keeps it editable by hand, and the
// indirection lets every glyph pick up a theme change for free.
#include <gui/gui_icons.h>
#include <gui/gui_gfx.h>
#include <gui/gui_theme.h>
#define ICON_PALETTE_SIZE 16
static const uint32_t g_palette[ICON_PALETTE_SIZE] = {
0x00000000, // 0 transparent
0xFF0B0F19, // 1 outline / near-black
0xFFF8FAFC, // 2 white
0xFF94A3B8, // 3 muted grey
0xFF475569, // 4 dark grey
0xFF38BDF8, // 5 primary sky
0xFF0284C7, // 6 primary dark
0xFF34D399, // 7 success green
0xFFFBBF24, // 8 warning amber
0xFFF87171, // 9 danger red
0xFF818CF8, // A accent indigo
0xFFEC4899, // B pink
0xFF1E293B, // C surface
0xFF334155, // D elevated
0xFF000000, // E pure black
0xFFD9A441 // F folder tan
};
static const char* g_icons[GUI_ICON_COUNT][GUI_ICON_SIZE] = {
// GUI_ICON_TERMINAL
{
"4111111111111114",
"4CCCCCCCCCCCCCC4",
"4CCCCCCCCCCCCCC4",
"4C7CCCCCCCCCCCC4",
"4C77CCCCCCCCCCC4",
"4C777CCCCCCCCCC4",
"4C7777CCCCCCCCC4",
"4C777CCCCCCCCCC4",
"4C77CCCCCCCCCCC4",
"4C7CCCCCCCCCCCC4",
"4CCCCCCCCCCCCCC4",
"4CC77777777CCCC4",
"4CCCCCCCCCCCCCC4",
"4CCCCCCCCCCCCCC4",
"4CCCCCCCCCCCCCC4",
"4111111111111114",
},
// GUI_ICON_MONITOR
{
"4111111111111114",
"4CCCCCCCCCCCCCC4",
"4CCCCCCCCCCCC5C4",
"4CCCCCCCCCCC5CC4",
"4CCCCCCCCC55CCC4",
"4CCCCCCCC5CCCCC4",
"4CCCCCC55CCCCCC4",
"4CCCC55CCCCCCCC4",
"4CC55CCCCCCCCCC4",
"4C5CCCCCCCCCCCC4",
"4CCCCCCCCCCCCCC4",
"4111111111111114",
"0000444444440000",
"0000004444000000",
"0000444444440000",
"0000000000000000",
},
// GUI_ICON_FOLDER
{
"0000000000000000",
"0FFFFF0000000000",
"0F888FF000000000",
"0F88888FFFFFFF00",
"0F8888888888F000",
"0F8888888888F000",
"0F8888888888F000",
"0F8888888888F000",
"0F8888888888F000",
"0F8888888888F000",
"0F8888888888F000",
"0F8888888888F000",
"0FFFFFFFFFFFF000",
"0000000000000000",
"0000000000000000",
"0000000000000000",
},
// GUI_ICON_CALC
{
"4111111111111114",
"4CCCCCCCCCCCCCC4",
"4C777777777777C4",
"4C777777777777C4",
"4CCCCCCCCCCCCCC4",
"4C2CC2CC2CC2CCC4",
"4CCCCCCCCCCCCCC4",
"4C2CC2CC2CC2CCC4",
"4CCCCCCCCCCCCCC4",
"4C2CC2CC2CC2CCC4",
"4CCCCCCCCCCCCCC4",
"4C2CC2CC2CC5CCC4",
"4CCCCCCCCCCCCCC4",
"4CCCCCCCCCCCCCC4",
"4CCCCCCCCCCCCCC4",
"4111111111111114",
},
// GUI_ICON_PAINT
{
"0000000000000000",
"0000333333000000",
"0003222222300000",
"0032955992230000",
"0329999999923000",
"0329B99997923000",
"0329999999923000",
"0032999999230000",
"0003299992300000",
"0000322223000000",
"0000033330000000",
"0000004440000000",
"0000004440000000",
"0000004440000000",
"0000000000000000",
"0000000000000000",
},
// GUI_ICON_INFO
{
"0000055555000000",
"0000555555550000",
"0005566665550000",
"0055666666655000",
"0556662266665500",
"0556662266665500",
"0556666666665500",
"0556662266665500",
"0556622226665500",
"0556666226665500",
"0556666226665500",
"0556662222265500",
"0055666666655000",
"0005566665550000",
"0000555555550000",
"0000055555000000",
},
// GUI_ICON_SETTINGS
{
"0000034443000000",
"0000034443000000",
"0003344444330000",
"0034444444443000",
"0344444444444300",
"3444442224444430",
"4444422222444444",
"4444422222444444",
"4444422222444444",
"3444442224444430",
"0344444444444300",
"0034444444443000",
"0003344444330000",
"0000034443000000",
"0000034443000000",
"0000000000000000",
},
// GUI_ICON_TASKS
{
"0000000000000000",
"0555555555555550",
"0500000000000050",
"0507000000000050",
"0507700000000050",
"0507770000000050",
"0507777000000050",
"0500000000000050",
"0508880000000050",
"0508888000000050",
"0500000000000050",
"0509990000000050",
"0509999000000050",
"0500000000000050",
"0555555555555550",
"0000000000000000",
},
// GUI_ICON_LOG
{
"0022222222222000",
"0244444444442000",
"0240000000042000",
"0244444444442000",
"0240000000042000",
"0244444444442000",
"0240000000042000",
"0244444444442000",
"0240000000042000",
"0244444444442000",
"0240000000042000",
"0244444444442000",
"0240000000042000",
"0244444444442000",
"0022222222222000",
"0000000000000000",
},
// GUI_ICON_FLASK
{
"0000022222000000",
"0000020002000000",
"0000020002000000",
"0000020002000000",
"0000020002000000",
"0000200000200000",
"0000200000200000",
"0002000000020000",
"0002077777020000",
"0020777777702000",
"0020777777702000",
"0207777777770200",
"0207777777770200",
"0027777777772000",
"0002222222220000",
"0000000000000000",
},
// GUI_ICON_CLOCK
{
"0000055555000000",
"0005522222550000",
"0052222222225000",
"0522222222222500",
"0522221222222500",
"5222221222222250",
"5222221222222250",
"5222221222222250",
"5222221111122250",
"5222222222222250",
"5222222222222250",
"0522222222222500",
"0522222222222500",
"0052222222225000",
"0005522222550000",
"0000055555000000",
},
// GUI_ICON_FILE
{
"0022222222200000",
"0244444444200000",
"0244444444420000",
"0244444444442000",
"0244444444444200",
"0244444444444200",
"0244444444444200",
"0244444444444200",
"0244444444444200",
"0244444444444200",
"0244444444444200",
"0244444444444200",
"0244444444444200",
"0244444444444200",
"0222222222222200",
"0000000000000000",
},
// GUI_ICON_POWER
{
"0000009900000000",
"0000009900000000",
"0000999999000000",
"0009900009900000",
"0099009900990000",
"0990009900099000",
"0990009900099000",
"9900009900009900",
"9900009900009900",
"9900000000009900",
"9900000000009900",
"0990000000099000",
"0990000000099000",
"0099000000990000",
"0009999999900000",
"0000099999000000",
},
// GUI_ICON_WARNING
{
"0000008800000000",
"0000008800000000",
"0000088880000000",
"0000088880000000",
"0000881188000000",
"0000881188000000",
"0008811118800000",
"0008811118800000",
"0088111111880000",
"0088111111880000",
"0881111111188000",
"0881118811188000",
"8811118811118800",
"8811118811118800",
"8888888888888888",
"8888888888888888",
},};
static const char* g_icon_names[GUI_ICON_COUNT] = {
"Terminal", "Monitor", "Folder", "Calculator", "Paint", "Info",
"Settings", "Tasks", "Log", "Tests", "Clock", "File", "Power", "Warning"
};
static uint8_t hex_index(char c) {
if (c >= '0' && c <= '9') return (uint8_t)(c - '0');
if (c >= 'A' && c <= 'F') return (uint8_t)(c - 'A' + 10);
if (c >= 'a' && c <= 'f') return (uint8_t)(c - 'a' + 10);
return 0;
}
void gui_icons_init(void) {
// The glyph table is static const; nothing to build at runtime.
}
const char* gui_icon_name(gui_icon_id_t id) {
if (id < 0 || id >= GUI_ICON_COUNT) return "Unknown";
return g_icon_names[id];
}
void gui_icon_draw_scaled(gui_icon_id_t id, int x, int y, int scale) {
if (id < 0 || id >= GUI_ICON_COUNT) return;
if (scale < 1) scale = 1;
for (int row = 0; row < GUI_ICON_SIZE; row++) {
const char* line = g_icons[id][row];
if (!line) continue;
for (int col = 0; col < GUI_ICON_SIZE; col++) {
uint32_t color = g_palette[hex_index(line[col])];
if ((color >> 24) == 0) continue; // Transparent pixel
if (scale == 1) {
gui_gfx_draw_pixel(x + col, y + row, color);
} else {
gui_gfx_fill_rect(x + col * scale, y + row * scale, scale, scale, color);
}
}
}
}
void gui_icon_draw(gui_icon_id_t id, int x, int y) {
gui_icon_draw_scaled(id, x, y, 1);
}
void gui_icon_draw_tinted(gui_icon_id_t id, int x, int y, int scale, uint32_t tint) {
if (id < 0 || id >= GUI_ICON_COUNT) return;
if (scale < 1) scale = 1;
// Every opaque pixel becomes the tint; the glyph acts purely as a stencil.
for (int row = 0; row < GUI_ICON_SIZE; row++) {
const char* line = g_icons[id][row];
if (!line) continue;
for (int col = 0; col < GUI_ICON_SIZE; col++) {
if ((g_palette[hex_index(line[col])] >> 24) == 0) continue;
if (scale == 1) {
gui_gfx_draw_pixel(x + col, y + row, tint);
} else {
gui_gfx_fill_rect(x + col * scale, y + row * scale, scale, scale, tint);
}
}
}
}
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